package com.mzj.client;

import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.eclipse.paho.client.mqttv3.MqttSecurityException;
import org.eclipse.paho.client.mqttv3.MqttTopic;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Client {
	
	private static final Logger LOG = LoggerFactory.getLogger(Client.class);

	//public static final String HOST = "tcp://192.168.1.16:1883";
	//public static final String HOST = "tcp://hbemq.mzjmedia.com:1883";
	public static final String HOST = "tcp://192.168.5.181:1883";
	
	public static final String TOPIC = "apk/heartbeat/0";
	
	private MqttClient client;
	
	private MqttConnectOptions options;
	
	//private String userName = "apk_client~!@#8$%^&*(3)_+";
	//private String passWord = "check_pwswd~!@#tt$%^&*()_+";
	private String userName = "admin";
	private String passWord = "public123";

	private String clientId;
	
	private String clientIdTopic;
	
	private MqttTopic topic;
	
	private ScheduledExecutorService scheduler;

	//重新链接
	public void startReconnect() {
		scheduler = Executors.newSingleThreadScheduledExecutor();
		scheduler.scheduleAtFixedRate(new Runnable() {
			public void run() {
				if (!client.isConnected()) {
					try {
						client.connect(options);
					} catch (MqttSecurityException e) {
						e.printStackTrace();
					} catch (MqttException e) {
						e.printStackTrace();
					}
				}
			}
		}, 0 * 1000, 30 * 1000, TimeUnit.MILLISECONDS);
	}

	public void connect() {
		try {
			// host为主机名，test为clientid即连接MQTT的客户端ID，一般以客户端唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
			client = new MqttClient(HOST, clientId, new MemoryPersistence());
			// MQTT的连接设置
			options = new MqttConnectOptions();
			// 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，这里设置为true表示每次连接到服务器都以新的身份连接
			options.setCleanSession(false);
			// 设置连接的用户名
			options.setUserName(userName);
			// 设置连接的密码
			options.setPassword(passWord.toCharArray());
			// 设置超时时间 单位为秒
			options.setConnectionTimeout(10);
			// 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
			options.setKeepAliveInterval(30);
			// 设置回调
			client.setCallback(new PushCallback());
			//setWill方法，如果项目中需要知道客户端是否掉线可以调用该方法。设置最终端口的通知消息  
			//options.setWill(topic, "close".getBytes(), 0, true);
			
			client.connect(options);
			//订阅消息
			int[] Qos  = {2};
			String[] topic1 = {clientIdTopic};
			client.subscribe(topic1, Qos);
		} catch (Exception e) {
			LOG.error("Emq connect failed: "+e.getMessage(),e);
			startReconnect();
		}
	}
	
	public Client(String i) {
		this.clientIdTopic = "apk/update/" + i;
		this.clientId =  i + "";
	}
	
	public void sendMsg() {
		topic = client.getTopic(TOPIC);
		TimerTask task = new TimerTask() {  
	          @Override  
	          public void run() {  
	        	  MqttMessage message = new MqttMessage();
	        	  message.setQos(1);
	        	  message.setRetained(true);
	        	  String playload = "{\"data\":{\"ram\":{\"total\":\"\",\"surplus\":\"\"},"+
	        		  "\"status\":\"\",\"serialPort\":{\"serial2\":\"\"},"+
	        		  "\"disk\":{\"total\":\"\",\"surplus\":\"\"},"+
	        		  "\"reqTime\":\""+System.currentTimeMillis()+"\",\"cpu\":{\"temperature\":\"\",\"rate\":\"\"},"+
	        		  "\"machineId\":\""+clientId+"\",\"longitude\":\"\",\"latitude\":\"\","+
	        		  "\"net\":{\"sign\":\"\",\"type\":\"\",\"modal\":\"\"},\"version\":\"\"},"+
	          			"\"version\":\"1\"}";
	        	  message.setPayload(playload.getBytes());
	        	  MqttDeliveryToken token;
				try {
					token = topic.publish(message);
					token.waitForCompletion();
					LOG.info("Send {} {}",playload,token.isComplete());
				} catch (Exception e) {
					LOG.error(e.getMessage());
				}
	          }  
	      };  
	      Timer timer = new Timer();  
	      long delay = 0;  
	      long intevalPeriod = 5 * 60000;  
	      timer.scheduleAtFixedRate(task, delay, intevalPeriod);  
	}
	public void disconnect() {
		 try {
			client.disconnect();
		} catch (MqttException e) {
			e.printStackTrace();
		}
	}
	



}
